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skad [1K]
4 years ago
15

Find the reference angle for -7pi/9

Mathematics
1 answer:
vovangra [49]4 years ago
3 0

Answer:

0° to 90°: reference angle = angle ,

90° to 180°: reference angle = 180° - angle ,

180° to 270°: reference angle = angle - 180° ,

270° to 360°: reference angle = 360° - angle .

Step-by-step explanation:

you can use them all but only one matches

your problem

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